mirror of
https://github.com/kidfromjupiter/nearby.git
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Alexey Polyudov
4baa1ce96a
Signed-off-by: Alexey Polyudov <apolyudov@google.com> Change-Id: Ie19e006429b138b3768e97dae971a43fdc5ef8bf
46 lines
1.4 KiB
C++
46 lines
1.4 KiB
C++
// Copyright 2020 Google LLC
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef PLATFORM_V2_API_COUNT_DOWN_LATCH_H_
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#define PLATFORM_V2_API_COUNT_DOWN_LATCH_H_
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#include <cstdint>
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#include "platform_v2/base/exception.h"
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#include "absl/time/time.h"
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namespace location {
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namespace nearby {
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namespace api {
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// A synchronization aid that allows one or more threads to wait until a set of
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// operations being performed in other threads completes.
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//
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// https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/CountDownLatch.html
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class CountDownLatch {
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public:
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virtual ~CountDownLatch() = default;
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virtual Exception Await() = 0; // throws Exception::kInterrupted
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virtual ExceptionOr<bool> Await(
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absl::Duration timeout) = 0; // throws Exception::kInterrupted
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virtual void CountDown() = 0;
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};
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} // namespace api
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} // namespace nearby
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} // namespace location
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#endif // PLATFORM_V2_API_COUNT_DOWN_LATCH_H_
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